From: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Date: Thu, 23 May 2019 02:23:39 +0000 (+0000)
Subject: panfrost/midgard: Cleanup copy propagation
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5da0a33fab0b3cc6ea03c102bd1e156904d983e5;p=mesa.git

panfrost/midgard: Cleanup copy propagation

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Ryan Houdek <Sonicadvance1@gmail.com>
---

diff --git a/src/gallium/drivers/panfrost/midgard/midgard_compile.c b/src/gallium/drivers/panfrost/midgard/midgard_compile.c
index b57b46aaecd..c519193a56a 100644
--- a/src/gallium/drivers/panfrost/midgard/midgard_compile.c
+++ b/src/gallium/drivers/panfrost/midgard/midgard_compile.c
@@ -1769,17 +1769,10 @@ midgard_opt_copy_prop(compiler_context *ctx, midgard_block *block)
                 if (mir_nontrivial_mod(src, is_int, mask)) continue;
                 if (ins->alu.outmod != midgard_outmod_none) continue;
 
-                mir_foreach_instr_in_block_from(block, v, mir_next_op(ins)) {
-                        if (v->ssa_args.src0 == to) {
-                                v->ssa_args.src0 = from;
-                                progress = true;
-                        }
-
-                        if (v->ssa_args.src1 == to && !v->ssa_args.inline_constant) {
-                                v->ssa_args.src1 = from;
-                                progress = true;
-                        }
-                }
+                /* We're clear -- rewrite */
+                mir_rewrite_index_src(ctx, to, from);
+                mir_remove_instruction(ins);
+                progress |= true;
         }
 
         return progress;